Putting the behavior into animal movement modeling: Improved activity budgets from use of ancillary tag information
Animal movement research relies on biotelemetry, and telemetry‐based locations are increasingly augmented with ancillary information. This presents an underutilized opportunity to enhance movement process models. Given tags designed to record specific behaviors, efforts are increasing to update move...
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Online Access: | http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5108274/ http://www.ncbi.nlm.nih.gov/pubmed/27878092 https://doi.org/10.1002/ece3.2530 |
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ftpubmed:oai:pubmedcentral.nih.gov:5108274 2023-05-15T13:56:04+02:00 Putting the behavior into animal movement modeling: Improved activity budgets from use of ancillary tag information Bestley, Sophie Jonsen, Ian Harcourt, Robert G. Hindell, Mark A. Gales, Nicholas J. 2016-10-20 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5108274/ http://www.ncbi.nlm.nih.gov/pubmed/27878092 https://doi.org/10.1002/ece3.2530 en eng John Wiley and Sons Inc. http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5108274/ http://www.ncbi.nlm.nih.gov/pubmed/27878092 http://dx.doi.org/10.1002/ece3.2530 © 2016 The Authors. Ecology and Evolution published by John Wiley & Sons Ltd. This is an open access article under the terms of the Creative Commons Attribution (http://creativecommons.org/licenses/by/4.0/) License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited. CC-BY Original Research Text 2016 ftpubmed https://doi.org/10.1002/ece3.2530 2016-11-27T01:16:59Z Animal movement research relies on biotelemetry, and telemetry‐based locations are increasingly augmented with ancillary information. This presents an underutilized opportunity to enhance movement process models. Given tags designed to record specific behaviors, efforts are increasing to update movement models beyond reliance solely upon horizontal movement information to improve inference of space use and activity budgets. We present two state‐space models adapted to incorporate ancillary data to inform three discrete movement states: directed, resident, and an activity state. These were developed for two case studies: (1) a “haulout” model for Weddell seals, and (2) an “activity” model for Antarctic fur seals which intersperse periods of diving activity and inactivity. The methodology is easily implementable with any ancillary data that can be expressed as a proportion (or binary) indicator. A comparison of the models augmented with ancillary information and unaugmented models confirmed that many behavioral states appeared mischaracterized in the latter. Important changes in subsequent activity budgets occurred. Haulout accounted for 0.17 of the overall Weddell seal time budget, with the estimated proportion of time spent in a resident state reduced from a posterior median of 0.69 (0.65–0.73; 95% HPDI) to 0.54 (0.50–0.58 HPDI). The drop was more dramatic in the Antarctic fur seal case, from 0.57 (0.52–0.63 HPDI) to 0.22 (0.20–0.25 HPDI), with 0.35 (0.31–0.39 HPDI) of time spent in the inactive (nondiving) state. These findings reinforce previously raised contentions about the drawbacks of behavioral states inferred solely from horizontal movements. Our findings have implications for assessing habitat requirements; estimating energetics and consumption; and management efforts such as mitigating fisheries interactions. Combining multiple sources of information within integrated frameworks should improve inference of relationships between movement decisions and fitness, the interplay between resource and habitat ... Text Antarc* Antarctic Antarctic Fur Seal Antarctic Fur Seals Weddell Seal Weddell Seals PubMed Central (PMC) Antarctic The Antarctic Weddell Ecology and Evolution 6 22 8243 8255 |
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Original Research |
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Original Research Bestley, Sophie Jonsen, Ian Harcourt, Robert G. Hindell, Mark A. Gales, Nicholas J. Putting the behavior into animal movement modeling: Improved activity budgets from use of ancillary tag information |
topic_facet |
Original Research |
description |
Animal movement research relies on biotelemetry, and telemetry‐based locations are increasingly augmented with ancillary information. This presents an underutilized opportunity to enhance movement process models. Given tags designed to record specific behaviors, efforts are increasing to update movement models beyond reliance solely upon horizontal movement information to improve inference of space use and activity budgets. We present two state‐space models adapted to incorporate ancillary data to inform three discrete movement states: directed, resident, and an activity state. These were developed for two case studies: (1) a “haulout” model for Weddell seals, and (2) an “activity” model for Antarctic fur seals which intersperse periods of diving activity and inactivity. The methodology is easily implementable with any ancillary data that can be expressed as a proportion (or binary) indicator. A comparison of the models augmented with ancillary information and unaugmented models confirmed that many behavioral states appeared mischaracterized in the latter. Important changes in subsequent activity budgets occurred. Haulout accounted for 0.17 of the overall Weddell seal time budget, with the estimated proportion of time spent in a resident state reduced from a posterior median of 0.69 (0.65–0.73; 95% HPDI) to 0.54 (0.50–0.58 HPDI). The drop was more dramatic in the Antarctic fur seal case, from 0.57 (0.52–0.63 HPDI) to 0.22 (0.20–0.25 HPDI), with 0.35 (0.31–0.39 HPDI) of time spent in the inactive (nondiving) state. These findings reinforce previously raised contentions about the drawbacks of behavioral states inferred solely from horizontal movements. Our findings have implications for assessing habitat requirements; estimating energetics and consumption; and management efforts such as mitigating fisheries interactions. Combining multiple sources of information within integrated frameworks should improve inference of relationships between movement decisions and fitness, the interplay between resource and habitat ... |
format |
Text |
author |
Bestley, Sophie Jonsen, Ian Harcourt, Robert G. Hindell, Mark A. Gales, Nicholas J. |
author_facet |
Bestley, Sophie Jonsen, Ian Harcourt, Robert G. Hindell, Mark A. Gales, Nicholas J. |
author_sort |
Bestley, Sophie |
title |
Putting the behavior into animal movement modeling: Improved activity budgets from use of ancillary tag information |
title_short |
Putting the behavior into animal movement modeling: Improved activity budgets from use of ancillary tag information |
title_full |
Putting the behavior into animal movement modeling: Improved activity budgets from use of ancillary tag information |
title_fullStr |
Putting the behavior into animal movement modeling: Improved activity budgets from use of ancillary tag information |
title_full_unstemmed |
Putting the behavior into animal movement modeling: Improved activity budgets from use of ancillary tag information |
title_sort |
putting the behavior into animal movement modeling: improved activity budgets from use of ancillary tag information |
publisher |
John Wiley and Sons Inc. |
publishDate |
2016 |
url |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5108274/ http://www.ncbi.nlm.nih.gov/pubmed/27878092 https://doi.org/10.1002/ece3.2530 |
geographic |
Antarctic The Antarctic Weddell |
geographic_facet |
Antarctic The Antarctic Weddell |
genre |
Antarc* Antarctic Antarctic Fur Seal Antarctic Fur Seals Weddell Seal Weddell Seals |
genre_facet |
Antarc* Antarctic Antarctic Fur Seal Antarctic Fur Seals Weddell Seal Weddell Seals |
op_relation |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5108274/ http://www.ncbi.nlm.nih.gov/pubmed/27878092 http://dx.doi.org/10.1002/ece3.2530 |
op_rights |
© 2016 The Authors. Ecology and Evolution published by John Wiley & Sons Ltd. This is an open access article under the terms of the Creative Commons Attribution (http://creativecommons.org/licenses/by/4.0/) License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited. |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1002/ece3.2530 |
container_title |
Ecology and Evolution |
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6 |
container_issue |
22 |
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8243 |
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8255 |
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1766263286395830272 |